#IT #MobileDevelopment #iOS #Swift #SwiftUI #UIKit #Matrix #Element #vacancy #remote
Vacancy: Lead iOS Developer (Messaging / Matrix)
Salary Range: 250k RUB (hourly rate)
Format: full-time, remote (Moscow / GMT+3)
❤️❤️ ❤️❤️ 🩷6️⃣❤️✨
We are looking for an iOS developer to join the team developing a messenger based on the Matrix protocol (based on Element). The project is the first iteration with personal/group chats and separate channels, delivering updates through the Element event model. The task is to bring the UI to the mockups, ensuring complete visual and behavioral consistency with the Android version.
Responsibilities:
- Develop and enhance the messenger UI using SwiftUI and UIKit.
- Work with Matrix events: sync/timeline/room_tags.
- Ensure E2EE (Megolm, key backup, key recovery, device verification).
- Integrate with matrix-ios-sdk (Obj-C API), catch and fix crashes on implicitly-unwrapped optionals.
- Configure Keychain/entitlements/app groups, push extensions (NSE).
- Debug animations, custom gestures, Spring animations, working with GeometryReader/PreferenceKey.
- Interact with designers, analysts, QA, and the Android team to synchronize behavior.
- Conduct code reviews, design architecture, optimize performance, support releases.
Requirements (Mandatory):
- Deep knowledge of Swift and SwiftUI: GeometryReader/PreferenceKey, safeAreaInset, zIndex/hit-testing, drawingGroup, custom gestures (LongPress→Drag), spring animations.
- Experience with UIKit and interop: hosting controllers, Element legacy navigation coordinators, UIKit views within SwiftUI and vice versa.
- Understanding of Obj-C interop: working with matrix-ios-sdk, NSString bridges, implicitly-unwrapped optionals.
- Experience with Keychain/entitlements/app groups, NSE (push extension).
- Knowledge of E2EE fundamentals (Megolm, key backup, key recovery, device verification).
- Understanding of Matrix: sync/timeline/room_tags.
- Ability to independently analyze and modify third-party code (Element is open source).
Will be a plus:
- Experience with SQLCipher.
- Metal/CI filters.
- Experience developing Telegram-like clients.
- Knowledge of FCM/UnifiedPush.
- Experience with Espresso/UI Automator (for self-checking on iOS).
Conditions:
- Remote work within the Russian Federation.
- Cooperation via Sole Proprietor or Self-Employed status.
- Participation in the development of a complex, high-load digital product.
- Payment for professional courses, training discounts, corporate bonus program.
📩 Please send your RESUME IMMEDIATELY in your message.
Contact: @i_schanti
